Ignition system

Details Ignition system Ignition system

1987-10-05

1988-08-30

Hix, L. T.

Electricity: electrical systems and devices

Igniting systems

For explosive devices

102218, F23Q 700

Patent

active

047681276

ABSTRACT:
A plurality of electric blasting caps are fired through the ignition system which includes a transformer having a primary winding and a secondary winding. The secondary winding of the transformer is connected to the resistive elements of the blasting caps through a blasting circuit which is electromagnetically coupled to the resistive elements of the blasting caps via a small toroid transformer. A D.C. voltage is stored on a storage capacitor which has one end connected to the center point of the primary winding. The other ends of each half of the primary winding are connected through a driver circuit to ground. Each driver circuit is enabled by a flip-flop at predetermined intervals, whereby the storage capacitor will discharge through the appropriate half of the primary, to thereby produce a pulse train at the output of the secondary. The pulse train provides the ignition power for igniting the electric blasting caps.

REFERENCES:
patent: 4106073 (1978-08-01), Hedberg
patent: 4297947 (1981-11-01), Jones et al.
patent: 4422379 (1983-12-01), Geller et al.

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